Stacked type falling film evaporator, zero liquid discharge system comprising the same, and zero liquid discharging method using the same

Évaporateur à film tombant de type empilé, système zéro rejet liquide (ZRL) et procédé d'évacuation zéro rejet liquide le comportant

Fallfilmverdampfer vom Stapeltyp, sowie System zur flüssigkeitsfreien Auslauf und Verfahren zur flüssigkeitsfreien Ausgabe mit derselben

Abstract

A stacked type falling film evaporator includes a first evaporator (110), a second evaporator (120), a first vapor recovering device (130), a second vapor recovering device (140) and a vapor recompressor. The first evaporator (110) and the second evaporator (120) respectively have evaporation tubes (30) of a length of preferably 5 m to 10 m, and are stacked in such a manner that wastewater passes through the first evaporator (110) and the second evaporator (120) in order. The first vapor recovering device (130) collects vapor generated from the wastewater in the first evaporator (110) and supplies the collected vapor to the second evaporator (120). The second vapor recovering device (140) collects vapor generated from the wastewater in the second evaporator (120) and supplies the collected vapor to the first evaporator (110). The vapor recompressor (150) compresses the vapor collected in the second vapor recovering device (170) before the vapor is supplied to the first evaporator (110).

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Patent Citations (1)

    Publication numberPublication dateAssigneeTitle
    DE-102012203439-A1September 05, 2013Gea Wiegand GmbhAnlage zum Eindampfen eines flüssigen Produkts

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